Name
Ignatyev Alexey Stanislavovich
Scholastic degree
•
Academic rank
—
Honorary rank
—
Organization, job position
All-Russian Research Institute of crops
Web site url
—
Articles count: 1
The value of the initial material for selection for heterosis
is primarily defined by the combining ability in
respect to the main economically valuable characteristics.
Combining ability with respect to “grain productivity”
has been studied among fourteen selfpollinated
lines of maize of early ripening and three
testers in the system of hybrid combinations. We have
proved that weather conditions have an influence on
the variability of the estimates of the combining ability.
We have identified the new self-pollinated lines of
maize SP 165 and SP 175, which are characterized by
invariably high evaluations in the effects of GCA (gi)
in different years. The new self-pollinated line SP 167
has got high variants of SCA (δ2si). The new lines SP
161, SP 163, SP 167 and SP 174 have been characterized
by the variability of the evaluations in the effects
of GCA. They are related to the first or second rank in
respect of GCA, depending on the year of the conducted
evaluation. These are SP 163, SP 164, SP 170,
SP 171 and SP 173 that have differed by their variability
of the variants of SCA (from the low variants to
the high ones). The highly productive testcross hybrids:
Madonna M × SP 165 (4.88 t / ha), Madonna M
× SP 171 (4.85 t / ha), Madonna M × SP 167 (4.80 t /
ha), T 7M × SP 165 (4.78 t / ha) have been obtained
based on the self-pollinated lines having invariably
high figures of GCA and SCA